ZOOLOGY. 



Young much more brown ; a wide brownish black band on abdomen ; other under parts yellowish, with a few brownish lines 

 and spots. Tail white, with a ligM brown band near tip. 



A large hawk, with legs densely feathered to the toes, and which cannot be easily confounded with any other American, 

 species. It is distinguished from the young of the black hawk (A. Sandi Johannis) by its smaller size and fewer dark spots 

 on the under parts. CASSIN. 



No. 8549. Shoalwatcr bay, October 31, 1854:, (109.) Length, 21 ; extent, 52 inches. Iris, pale brown ; bill, slate colored 

 and yellow ; foot, yellow. 



In October, 1854, I found a large number of the rough-legged buzzard on a low point near 

 the sea-coast, covered with small pines, where they were sitting likeVwls on tLe dead tree tops, 

 occasionally darting down after a mouse, and alighting a short distance off. Sometimes they 

 called to each other with a loud scream, but usually sat for hours motionless and silent. They 

 varied considerably in the amount and distribution of the white feathers, but the specimen shot 

 seemed to be one of the most perfect. One only was of a general dark chocolate color. Some 

 remained all winter, and I think a few build near the mouth of the Columbia, where I saw 

 young birds in July, 1855. C. 



Specimen 6853, (581,) killed at Fort Steilacoom October 20, 1856, measures : length, 21^ ; 

 extent, 52^ ; wing, 16^ inches. Cere and tarsus, yellow ; bill, black ; iris, grayish yellow. S. 



ARCHIBUTEO FERRUGINEUS, Gray. 



Squirrel Hawk. 



JButeo ferruginous, LIGHT. Trans. Acad. Berlin, 1838, p. 428. 



Archibuteo ferrugineus, GRAY, Gen., p. 8. 



A. regalia, GRAY, Gen. I, pi. 6, (plate only.) 



A. ferrugineus, (LiCHT.,) BAIRD & CASSIN, Gen. Eep. Birds, p. 34. 



Buteo calijornicus, Hutcbin s Cal. Magazine, 1857. 



Figured in Birds of Cal. and Texas, I, pi. 26. 



SP. CH. Above entirely dark brown, and light rufous ; tall reddish while, mottled with ashy brown; pale beneath. Under 

 parts white, with narrow brown streaks and spots on breast, transverse and mixed with black on abdomen ; flank and axillse 

 bright ferruginous. 



Female: length, 23 to 25 ; wing, 17 to 17 \ ; tail, 9 inches. 



Male, smaller. Young: paler, upper tail coverts while, spotted with brown ; fewer streaks below ; under whig coverts and 

 edges of wing white C. 



I shot an adult specimen (female) in December, 1854, in the vicinity of Fort Dalles, 0. T. 

 It seemed old and feeble, and, either from weakness or apathy, allowed me to approach very 

 closely to its resting place. Its plumage was worn, ragged looking, and appeared as if it had 

 not been changed at the previous moulting season. The tail only of this bird I preserved, as 

 I had a press of material on hand, and much other business to attend to. On showing it to 

 Mr. John Cassin, he pronounced it to belong to this species. S. 



Sub-family MILVINAE. The Kites. 



ELANUS LEUCURUS, Bonaparte. 



The White-tailed Hawk j the Black-shouldered Hawk. 



Milvus leucurus, VIEILL., Nouv. Diet. XX, 663, (1818.) 



Mantis leucurus, VIEILL., BAIRD and CASSIN, Gen. Rep. Birds, p. 37. 



Elanus leucurus, BONAP. , Eur. & Am. Birds. 



Falco dispar, TKMMLNCK, PI. Col. I, liv. 54, about 1824. 



&quot;Falco melanopterus, DAUDIX.&quot; Bonap. Jour. Acad. Phil. V, 28. 



&quot;Falco dispar, TEMJI.&quot; Aud. Org. Biog. IV, 367. 



